Reading music as a “whole” language requires a skillset that takes rudiments such as scales and arpeggios which when combined with an aesthetic component such as groove, timbre, and phrasing make music. Take this etude in G major and work thru the patterns of scales and chords. Pencil in each idea as this will help you see the individual notes as “music”, a song. Post me your work, I’d be glad to comment on it. Its an exercise in music theory. The more you work with theory and apply it to your bass playing and reading, the better your musicianship skills will develop.
thanks, D MoClick to open PDF of G Major Etude

Here’s a track I recorded messin’ around with the song Mr PC written by John Coltrane for jazz bassist Paul Chambers.
The intro line is a commonly used diminished idea heading into the C minor chord. Try it. Build the line from a half step below C which is B. The diminished chord is spelled with these notes;
D F Ab B..You can start on any of them and you will get the diminished vibe.